Spartan vs gritty

Spartan

noun
  • A citizen of Sparta; a native or inhabitant of Sparta. 

  • A red apple cultivar from British Columbia, Canada 

adj
  • Of or relating to Sparta or its citizens. 

gritty

adj
  • Containing sand or grit; consisting of grit; caused by grit; full of hard particles. 

  • Spirited; resolute; unyielding. 

  • Intense and starkly realistic; depicting harsh reality, especially violence. 

How often have the words Spartan and gritty occurred in a corpus of books? (source: Google Ngram Viewer )